Arrow actor Stephen Amell and WWE Superstar Stardust have a great rivalry going both in the ring and on social media. But the two are teaming up to use their combined powers for good: helping a child fight cancer.

Amell's previous charitable campaigns have included both solo acts and teaming up with the organization F*ck Cancer.

"We were in-between our second and our third season, and my buddy Josh became very close with a family and a girl named Sophie, who was going through treatment for a brain tumor at the time, and is still in treatment but doing a lot better than she was supposed to," Amell told ComicBook.com at Heroes and Villains Fan Fest of his charitable work. They raffled off an Arrow statue, and made about $200,000 dollars. The co-founder of F* Cancer brought him in next, and he's teamed with them on limited edition t-shirts, including one promoting the Amell vs Stardust rivalry.

Stardust, whose secret identity is Cody Rhodes - son of the legendary Dusty Rhodes - like many WWE wrestlers has participated in making fans dreams come true. When a young boy named Elijah Mainville, currently battling stage 4 cancer, wanted to be a WWE Wrestler, he wanted one man by his side: Stardust. The wrestler, WWE's Chief Brand Officer Stephanie McMahon and EVP Paul Levesque (Triple H) responded wonderfully, signing the boy to a contract during a live broadcast, with his own Superstar name: Drax Shadow (he even dropped a heck of a one-liner promo!). Stardust paraded the kid around the ring, making him part of his act for that special night and beyond.

Now the two have teamed up for a special "Nicky Clan" charity shirt. The t-shirt represents a Clash of Clans clan that features Amell, Stardust, WWE's Xavier Woods & Tyler Breeze, and others in and out of the WWE and the wrestling world. The #NickyCLAN t-shirt is being sold through Represent.com for 10 days as a limited edition, and 100% of the proceeds support Elijah in his fight against cancer. Products range from a $23 t-shirt to a $40 pullover hoodie.

"Rarely does the "NC" grant press outside of the formidable clan-castle walls," Stardust told ComicBook.com. "But for "Drax Shadow," we all bend the knee. When I met Elijah, it was right after the passing of Dusty Rhodes. I was told "Elijah needed me"...after that day I can honestly say, I needed him. I think social-media in the coming years needs to move from the realm of troll-parties and cynicism to something better...seeing Arrow fans and WWE fans jump to this cause is that type of better. Sometimes Stardust can be like Elsa Mars; just wanting to be loved...but honestly what's the point, if you can't help someone in true need. My hero, at the 2007 WWE Hall of Fame ceremony, said 'In hard times...it's our duty to make it GOOD TIMES for the fans...' and Elijah is more than a fan, he's a friend. I can't stand Stephen Amell... but I can't stand cancer more, and I am glad he's such a massive part of this campaign."

Note: We previously reported that Make-a-Wish was involved in Elijah Mainville's activities with the WWE. This has been corrected, as it was directly handled by the WWE's Stephanie McMahon and Paul Levesque.